CH180691A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

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Publication number
CH180691A
CH180691A CH180691DA CH180691A CH 180691 A CH180691 A CH 180691A CH 180691D A CH180691D A CH 180691DA CH 180691 A CH180691 A CH 180691A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
dye
parts
dyeing
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH180691A publication Critical patent/CH180691A/en

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Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden, dass man einen wert  vollen     Azofarbstoff    erhält, wenn man die       Diazoverbindung    des     5-Nitro-2-amino-l-oxy-          benzols    mit     1-N-Oxäthyl-N-butylamino-3-          methylbenzol    kuppelt.  



  Der Farbstoff eignet sich vorzüglich zum  Färben von     Zelluloseestern    und     -äthern    aus       wässrigem    Bade und liefert hierbei blau  stichig     fuchsinrote    Färbungen, die sich durch  besondere Klarheit und gute Lichtechtheit       auszeichnen,    sowie waschecht und rein weiss       ätzbar    sind; er eignet sich ferner zum Fär  ben von Harz- und     Nitrozelluloselacken.     



  <I>Beispiel</I>  154 Teile     5-Nitro-2-amino-l-oxyberrzol     werden in 6000 Teilen Wasser suspendiert,  mit 250 Teilen 35      /oiger,    Salzsäure versetzt  und unter allmählicher Zugabe von 300 Tei  len einer 23     0%igen        Natriumnitritlösung        diazo-          tiert.    Die so erhaltene Lösung der     Diazover-          bindung    wird mit einer Lösung von 218  Teilen 1-N-Oxäthyl-N-butylamino-3-methyl-         Benzol        in        120        Teilen        35        

  %iger        Salzsäure        und     1000 Teilen Wasser bei 40 bis 50 0 C gekup  pelt. Die     Farbstoffbildung    wird durch Zugabe  von 500 Teilen     Natriumacetat    zu Ende geführt.



  Process for the preparation of an azo dye. It has been found that a valuable azo dye is obtained if the diazo compound of 5-nitro-2-amino-1-oxybenzene is coupled with 1-N-oxethyl-N-butylamino-3-methylbenzene.



  The dye is particularly suitable for dyeing cellulose esters and ethers from aqueous baths and provides blue-tinged fox-red dyeings, which are characterized by particular clarity and good lightfastness, and are washable and can be etched in pure white; it is also suitable for dyeing resin and nitrocellulose lacquers.



  <I> Example </I> 154 parts of 5-nitro-2-amino-1-oxyberrzene are suspended in 6000 parts of water, 250 parts of 35% hydrochloric acid are added and 300 parts of a 23% strength are gradually added Diazotized sodium nitrite solution. The solution of the diazo compound thus obtained is mixed with a solution of 218 parts of 1-N-oxethyl-N-butylamino-3-methylbenzene in 120 parts

  % hydrochloric acid and 1000 parts of water at 40 to 50 0 C gekup pelt. The dye formation is brought to an end by adding 500 parts of sodium acetate.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man die Diazoverbindung des 5-Nitro-2-amino-l- oxybenzols mit 1-N-Oxäthyl-N-bLitylamino-3- methylberrzol kuppelt. Claim: Process for the production of an azo dye, characterized in that the diazo compound of 5-nitro-2-amino-l-oxybenzene is coupled with 1-N-oxethyl-N-bLitylamino-3-methylberzene. Der Farbstoff eignet sich vorzüglich zum Färben von Zelluloseestern und -ätherrr aus wässrigern Bade und liefert hierbei blau stichig fuchsinrote Färbungen, die sich durch besondere Klarheit und gute Lichtechtbeit auszeichnen, sowie waschecht und rein weiss ätzbar sind<B>;</B> er eignet sich ferner zum Fär ben von Harz- und Nitrozelluloselacken. The dye is particularly suitable for dyeing cellulose esters and ethers from aqueous baths and provides blue-tinged fox-red tints, which are characterized by particular clarity and good lightfastness, as well as being washable and etchable in pure white <B>; </B> it is suitable furthermore to dyeing resin and nitrocellulose lacquers.
CH180691D 1934-03-09 1935-02-06 Process for the preparation of an azo dye. CH180691A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE180691X 1934-03-09

Publications (1)

Publication Number Publication Date
CH180691A true CH180691A (en) 1935-11-15

Family

ID=5712340

Family Applications (1)

Application Number Title Priority Date Filing Date
CH180691D CH180691A (en) 1934-03-09 1935-02-06 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH180691A (en)

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